3725664321722 has 32 divisors (see below), whose sum is σ = 6437719880064. Its totient is φ = 1584004593600.

The previous prime is 3725664321571. The next prime is 3725664321763. The reversal of 3725664321722 is 2271234665273.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5282048 + ... + 5945700.

It is an arithmetic number, because the mean of its divisors is an integer number (201178746252).

Almost surely, 2^{3725664321722} is an apocalyptic number.

3725664321722 is a deficient number, since it is larger than the sum of its proper divisors (2712055558342).

3725664321722 is a wasteful number, since it uses less digits than its factorization.

3725664321722 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 666854.

The product of its digits is 5080320, while the sum is 50.

Adding to 3725664321722 its reverse (2271234665273), we get a palindrome (5996898986995).

The spelling of 3725664321722 in words is "three trillion, seven hundred twenty-five billion, six hundred sixty-four million, three hundred twenty-one thousand, seven hundred twenty-two".